Mathematical Model For Laser Densification Of Ceramic Coating

    Authors

    J. Cheng;A. Kar

    Comments

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    Abbreviated Journal Title

    J. Mater. Sci.

    Keywords

    BEAM; Materials Science, Multidisciplinary

    Abstract

    A theoretical study for the densification of ceramic coating processed with a moving transmission electron microscopy (TEM00) mode laser beam is conducted. A three-dimensional quasi-steady state heat conduction model is developed by applying the Fourier integral transform method. An approximate expression for temperature distribution is also presented and the calculations with it are found to be in good agreement with the exact solutions within a limited region around the laser spot. The depth of the heat-affected zone in ZrO2 coating is calculated with this model. Moreover, a working range for ZrO2 densification is determined by varying the laser beam power, spot size and scanning velocity. The heat-affected zone is found to be confined within a depth of 50 mu m from the surface and the vitrified layers are fully densified for particles of initial radius 5 mu m.

    Journal Title

    Journal of Materials Science

    Volume

    32

    Issue/Number

    23

    Publication Date

    1-1-1997

    Document Type

    Article

    Language

    English

    First Page

    6269

    Last Page

    6278

    WOS Identifier

    WOS:A1997YK05600020

    ISSN

    0022-2461

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